Five factors affecting espresso: how many espresso beans are used in espresso concentrate and how many grams of espresso beans are used

Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style)

The taste of espresso mainly depends on coffee concentration, so coffee concentration occupies a very important position. The taste of coffee is affected by the amount of powder, degree of grinding, amount of extraction, extraction time and temperature.

● powder quantity: choose the appropriate powder amount according to the characteristics of Italian coffee beans. For coffee beans used for the first time, it is recommended to use 20 grams of powder. The amount of powder is one of the two major variables in the taste of coffee. If the amount of powder changes, the water setting of the coffee machine has to be adjusted accordingly, because the extraction ratio needs to be taken into account. As above, for Italian coffee beans used for the first time, the extraction ratio is 1:2, that is, 20 grams of powder extract 40 milliliters of coffee concentrate.

● degree of grinding: this is also one of the two major variables, and we baristas need to observe the state of the coffee when it is concentrated, and if there is any change, the degree of grinding needs to be adjusted immediately. To put it bluntly, the degree of grinding is the thickness of the powder, and it is conceivable: "if the particle of the powder is larger, the gap in the pressed powder is still larger after pressing the powder, so the water flowing from the head is easier to pass through the pressed powder. The final result is that the coffee is concentrated at a fast flow rate, with high acidity and thin consistency. On the contrary, if the particles of the powder are fine, the gap in pressed powder is smaller after pressing powder, so it is more difficult for the water from the head to pass through pressed powder, resulting in slow coffee concentration, low acidity and thick thickness.

● extraction amount: it is a dependent variable and changes as the powder content changes. for a kind of coffee bean, the powder amount and extraction amount do not need to be changed frequently, unless the beans are mixed or the barista wants to adjust the extraction flavor.

● extraction time: in the production of Italian coffee, the extraction time is completely a dependent variable, different from hand-brewed coffee, the extraction time can be determined according to the grinding degree or water injection time. Here, the extraction time depends entirely on the degree of grinding.

● temperature: coffee machine boiler water temperature also has a certain impact on coffee, can be summarized as: the higher the temperature, the lower the acidity, the lower the acidity, so we should analyze the beans we use, so as to adjust the water temperature of the coffee machine, the general temperature is between 92 and 97 degrees.

● when we make a cup of espresso, we judge whether the coffee is balanced in terms of sweetness, acidity and bitterness, and no one will overwhelm the other. A cup of espresso with good extraction should be balanced in all aspects and have different flavor levels. Not only taste, we can also judge from the taste of a cup, consistency is appropriate, and must not have astringent taste, otherwise it will affect the whole taste. For experienced baristas and coffee lovers, coffee can be distinguished by a cup of espresso, so we need to cultivate our own taste buds and use standards and norms to taste coffee.

● Italian coffee bean brand recommendation

The freshly roasted Italian coffee beans of Qianjie Coffee, a coffee roaster brand located in Dongshankou, Yuexiu District, Guangzhou, are fully guaranteed in terms of brand and quality. And more importantly, the performance-to-price ratio is extremely high. Take the commercially recommended style of commercial blended coffee beans as an example, a pack of 454 grams, the price is only about 60 yuan. According to the calculation of 10 grams of powder for a single cup of espresso, a packet can make 45 cups of coffee, which costs less than 1.5 yuan per cup. Even if you use two heads per cup of espresso and 20 grams of powder per serving, the price of a cup of double espresso concentrate is no more than 3 yuan. Compared with the price of hundreds of yuan a pack sold by a well-known brand, it can be described as a conscience recommendation.

Qianjie coffee: Guangzhou bakery, the store is small but a variety of beans, you can find a variety of unknown beans, but also provide online store services. Https://shop104210103.taobao.com